FX
2N
-4AD-TC SPECIAL FUNCTION BLOCK
USER’S GUIDE
JY992D65501B
This manual contains text, diagrams and explanations which will guide the reader in the correct
installation and operation of the FX
2N
-4AD-TC special function block and should be read and understood
before attempting to install or use the unit.
Further information can be found in the FX PROGRAMMING MANUAL(
ΙΙ
) and FX
0N
/FX
1N
/FX
2N
/FX
2NC
SERIES HARDWARE MANUAL.
Guidelines for the Safety of the User and Protection of the FX
2N
-4AD-TC
special function block.
This manual should be used by trained and competent personnel. The definition of such a person or
persons is as follows:
a) Any engineer using the product associated with this manual, should be of a competent nature,
trained and qualified to the local and national standards. These engineers should be fully aware of
all aspects of safety with regards to automated equipment.
b) Any commissioning or service engineer must be of a competent nature, trained and qualified to
the local and national standards.
c)
All operators of the completed equipment should be trained to use this product in a safe and
coordinated manner in compliance to established safety practices.
Note: The term ‘completed equipment’ refers to a third party constructed device which contains or uses
the product associated with this manual.
Notes on the Symbols Used in this Manual
At various times throughout this manual certain symbols will be used to highlight points of information
which are intended to ensure the users personal safety and protect the integrity of equipment.
1) Indicates that the identified danger WILL cause physical and property damage.
2) Indicates that the identified danger could POSSIBLY cause physical and property
damage.
•
Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential damage
that may arise as a result of the installation or use of this equipment.
•
All examples and diagrams shown in this manual are intended only as an aid to understanding the
text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for the actual use of
the product based on these illustrative examples.
•
Owing to the very great variety in possible applications for this equipment, you must satisfy yourself as
to its suitability for your own specific application.
1. INTRODUCTION
•
The FX
2N
-4AD-TC analog block amplifies the signal from four thermocouple sensors (Type K or J) and
converts the data into 12 bit reading’s stored in the main unit. Both Centigrade (
°
C) and Fahrenheit
(
°
F) can be read.
Reading resolution is 0.4
°
C/0.72
°
F of Type K and 0.3
°
C/0.54
°
F of Type J.
•
The FX
2N
-4AD-TC can connected to the FX
0N
, FX
1N
, FX
2N
and the FX
2NC
series Programmable
Controllers (PLC).
•
All data transfers and parameter settings are adjusted via software control of the FX
2N
-4AD-TC; by
use of the TO/FROM applied instructions in the PLC.
•
The FX
2N
-4AD-TC occupies 8 I/O points on the PLC expansion bus. The 8 I/O points can be allocated
from either inputs or outputs. The FX
2N
-4AD-TC draws 40mA from the 5V rail of the main unit or
powered extension unit.
•
Thermocouples with the following specifications can be used: Type K (JIS 1602-1981)
Type J (JIS 1602-1981)
2. EXTERNAL DIMENSIONS
3. CONNECTION WITH PLC
3.1 Connection with PLC
1) Up to 4 FX
2N
-4AD-TC units can connect to the FX
0N
series PLC, up to 5 for FX
1N
, up to 8 for FX
2N
or,
up to 4 for an FX
2NC
series PLC, all with powered extension units.
However the following limitation exists when the undermentioned special function blocks are
connected.
FX
2N
: Main unit and powered extension units of 32 I/O points or less. Current consumption available
for the undermentioned special function blocks
≤
190mA
FX
2N
: Main unit and powered extension units of 48 I/O points or more. Current consumption
available for the undermentioned special function blocks
≤
300mA
FX
2NC
: Up to 4 undermentioned special function blocks can be connected regardless of the system I/O.
When using an FX
2NC
an FX
2NC
-CNV-IF is required.
FX
0N
/
1N
: Main unit and powered extension units. Up to 2 undermentioned special function blocks can
be connected regardless of the system I/O.
2) Each block occupies 8 I/O points (The 8 points can be allocated from either inputs or outputs).
3) FX
2N
-4AD-TC consumes 40mA from the 5V DC bus.
The total 5V consumption of all special function blocks connected to a main unit or extension unit
must not exceed the 5V source capacity of the system.
4) The FX
2N
-4AD-TC and main unit are connected by a cable on the right of the main unit.
3.2 Special function block numbers
Other special units of blocks that use FROM/TO commands, such as analog input blocks, analog output
blocks and high-speed counter blocks, can be directly connected to the main unit of the PLC or to the right
side of other extension blocks or units.
4. WIRING
4.1 Wiring
*1: The compensating cables that can be used for
connecting with the thermocouple are the following.
Type K: KX-G, KX-GS, KX-H, KX-HS,WX-G,WX-H,VX-G
Type J: JX-G, JX-H
For every 10
Ω
of line resistance, the compensating
cable will indicate a temperature 0.12
°
C higher than
actual.
C h e c k t h e l i n e r e s i s t a n c e b e fo r e u s i n g . L o n g
c o m p e n s a t i n g c a b l e s a r e m o r e p r o n e t o n o i s e
in te rfe r en c e, th ere fore a s h o r t ( le s s tha n 10 0 m )
compensating cable is recommended.
Unused channels should have a wire link connected
between the + and - terminals to prevent an errors being
detected on that channel.
*2: If there is excessive electrical noise, connect the SLD
terminal to the ground terminal on the unit.
*3: Connect the ground terminals of the FX
2N
-4AD-TC unit and the main unit. Use grounding on the main
unit.
*4: The 24V DC built-in supply of the PLC may be used as the power supply.
P O W E R
2 4 V
A / D
C
H
4
C
H
3
C
H
1
24
+ 24
-
L+
L+
FX
2N
-4
A
D
-T
C
L-
L-
L+
L-
S
LD
C
H
1
24
+ 24
-
L-
C
H
2
L-
L+
L+
4 ( 0 . 1 6 )
4 ( 0 . 1 6 )
5 5 ( 2 . 1 7 )
80
(3
.1
5)
90
(3
.5
4)
5 5 ( 2 . 1 7 )
8 7 ( 3 . 4 3 )
9 ( 0 . 3 5 )
S
LD
S
LD
S
LD
S
LD
T e r m i n a l s c r e w s M 3 ( 0 . 1 2 )
2 4 V
L E D
A / D
L E D
D I N r a i l
m o u n t i n g s l o t
3 5 m m ( 1 . 3 8 )
M o u n t i n g h o l e s
4 . 5 m m ( 0 . 1 8 ) d i a .
E x t e n s i o n c a b l e
a n d c o n n e c t o r
Weight: Approx. 0.3 kg (0.66 lbs)
Dimensions: mm (inches)
Accessories: Self adhesive labels for special function block number identification
F X - 1 6 E X
X 0 0 0 - X 0 2 7
Y 0 0 0 - Y 0 2 7
X 0 3 0
- X 0 4 7
2 N
F X - 4 8 M R - E S / U L
2 N
F X - 4 A D
2 N
N o . 2
2 N
F X - 4 A D - T C
X 0 5 0 - X 0 6 7
Y 0 3 0 - Y 0 4 7
2 N
F X - 3 2 E R
2 N
F X - 4 D A
F X - 4 8 M R - E S / U L
2 N
P O W E R
A / D
2 4 V
F X - 4 A D
2 N
P O W E R
D / A
2 4 V
F X - 4 D A
2 N
N o . 1
N o . 0
P O W E R
2 4 V
A / D
S p e c i a l b l o c k
S p e c i a l b l o c k
S p e c i a l b l o c k
X 0
X 5
7
2
4
5
6
1
3
0
1 6
1 1
1 5
1 4
1 7
1 0
1 2 1 3
1 4
1 7
1 5
1 0
1 2 1 3
7
2
4
5
6
1
3
0
1 6
1 1
O U T
I N
L
X 1 1
X 1 3
X 1 5
X 1 7
X 6
X 1 0
X 1 2
X 1 4
X 1 6
2 4 +
N
C O M
X 4
X 7
C O M 4
C O M 2
Y 4
Y 5
Y 6
Y 7
C O M 3
Y 1 0
Y 1 1
Y 1 2
Y 1 3
C O M 1
Y 0
Y 1
Y 2
Y 3
Y 1 4
Y 1 5
Y 1 6
Y 1 7
X 3
X 2
X 1
P O W E R
7
6
2 7
2 0
2 2 2 3 2 4 2 5 2 6
2 1
1 6 1 7
1 4
1 7
1 5
1 0
1 2 1 3
7
2
4
5
6
1
3
0
2 7
2 0
2 2 2 3 2 4 2 5 2 6
2 1
1 6
1 1
I N
L
X 5
X 7
X 1 3
X 1 5
X 1 7
X 2 1
X 2 3
X 2 5
X 4
X 6
X 1 0
X 1 4
X 1 6
X 2 0
X 2 2
X 2 4
2 4 +
N
C O M
X 0
X 1
X 2
C O M 4
Y 2 4
Y 2 5
C O M 5
Y 2 7
C O M 2
Y 4
Y 5
Y 6
Y 7
C O M 3
Y 1 0
Y 1 3
C O M 1
Y 0
Y 2
Y 3
Y 1 4
Y 1 5
Y 2 0
Y 2 1
Y 2 2
Y 2 3
Y 2 6
P O W E R
T . V
C P U . E
P R O G . E
Connection example
Thermocouple
1
shielded CH1
3K
:
L+
24+
24-
DC/DC
converter
AG
+15V
-15V
PLC
Extension cable
Grounding
(100
:
or less)
3
4
24VDC±10% 50mA
2
FX
2N
-4AD-TC
Analog Input Block
L-
CH1
SLD
Thermocouple
1
shielded CH4
L+
L-
SLD
3K
:
Temperature
compensation
circuit
CH4
4.2 Using crimp terminations
• Use crimp terminals as indicated on the left.
• Secure the terminal using a tightening torque of between 5 and 8
kg
⋅
cm.
• Wire only to the module terminals discussed in this manual. Leave all
others vacant.
5. SPECIFICATIONS
5.1 Environmental specification
5.2 Power supply specification
5.3 Performance specification
Analog Inputs
Miscellaneous
Note:
Earth-tipped thermocouples are not suitable for use with this unit.
5.4 Installation location
This unit measures temperature according to the temperature difference between the temperature
measurement part (themocouple) and the terminal block. If this unit is installed at a place where the
temperature of the terminal block varies rapidly, a measuring error may occur. For this reason, the unit
should be installed at a place free from excessive temperature variation.
Item
Specification
Environmental specifications
Same as those for the main unit
Dielectric withstand voltage
500V AC, 1min (between all terminals and ground)
Item
Specification
Analog circuits
24V DC ± 10%, 60mA
Digital circuits
5V DC, 40mA (internal power supply from the main unit)
Item
Centigrade (
°°°°
C)
Fahrenheit (
°°°°
F)
Both
°
C and
°
F are available by reading the appropriate buffer memory (BFM).
Input signal
Thermocouple: Type K or J (either can be used for each channel), 4 channels, JIS
1602-1981
Rated temperature
range
Type K
-100
°
C to +1,200
°
C Type
K
-148
°
F to +2,192
°
F
Type J
-100
°
C to +600
°
C
Type J
-148
°
F to +1,112
°
F
Digital output
12 bit conversion stored in 16 bit 2’s complement form
Type K
-1,000 to 12,000
Type K
-148
°
F to +2,192
°
F
Type J
-1,000 to 6,000
Type J
-148
°
F to +1,112
°
F
Resolution
Type K
0.4
°
C
Type K
0.72
°
F
Type J
0.3
°
C
Type J
0.54
°
F
Overall accuracy
Calibration point
± (0.5% full scale +1
°
C)
Freezing point of pure water 0
°
C / 32
°
F
Conversion speed
(240ms ± 2%)
×
4 channels (unused channels are not converted)
Item
Centigrade (
°°°°
C)
Fahrenheit (
°°°°
F)
Conversion Characteristics
Readings given at calibration
reference point 0
°
C/32
°
F (0/320)
respectively.
(subject to the overall accuracy)
Item
Specification
Isolation
Photo-coupler isolation between analog and digital circuits.
DC/DC converter isolation of power from main unit.
No isolation between analog channels.
Number of occupied I/O points
The block occupies 8 I/O points
(can be either inputs or outputs)
l e s s t h a n
6 . 2 m m ( 0 . 2 4
)
U s e M 3 ( 0 . 1 2
)
l e s s t h a n
6 . 2 m m ( 0 . 2 4
)
+6,000
-100°C
-1,000
+1,200°C
+12,000
(Type K)
(Type J)
+600°C
(Type K)
(Type J)
-1,480
+2,192°F
+21,920
(Type K)
(Type J)
+1,112°F
(Type K)
(Type J)
+11,120
-148°F
